Airwell YEVFD Series, Service Manual

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Anti-fouling measures
Pipe specification:
First, clean the pipe.
Position Installation period Measures
Outdoor
More than 1 month Flat the pipe end
Less than 1 month
Flat the pipe end or seal with adhesive tape
Indoor Nothing to do with period
1. Pipe "a" diameter (between indoor and branch pipe) depends on indoor pipe, the diameter
of the gas and liquid pipe of the indoor units shall be according to the installation manual for
indoor units.
2. Pipe "b" diameter (between branch pipes)
Total indoor capacity after the branch pipe (kW) Gas pipe (mm) Liquid pipe (mm)
<16.8kW Ø15.88 Ø9.52
16.8kW≤X<22.4kW Ø19.05 Ø9.52
22.4kW≤X<33.0kW Ø22.22 Ø9.52
33.0kW≤X<47.0kW Ø28.58 Ø12.7
Note:
Adjust the diameter on field (changing pipe is needed)
When the latter indoor total capacity is less than 14.0kw, pipe b will use the specs as the pipe a.
The first branch pipe
c
b
a
a
a
a
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